The most common ECG finding in the setting of a pulmonary embolism is sinus tachycardia. However, the “S1Q3T3” pattern of acute cor pulmonale is classic; this is termed the McGinn-White Sign.

Answer: The patient's clinical presentation is consistent with severe pulmonary hypertension (most likely due to her HIV disease). Her ECG revealed right ventricular hypertrophy which results from ...